沈正源,邱斌,颜晓娟,金晓晴

• 1:桂林电子科技大学信息与通信学院
• 2:桂林理工大学信息科学与工程学院

摘要(Abstract)：

在车载自组网的背景下,针对非对称的车载协作通信系统中发射车辆节点到目的节点单向传输影响系统容量和频谱利用率的问题,提出一种基于混合译码放大转发(HDAF)双向中继系统的功率分配方案。该方案通过对车载系统所有节点总功率的约束,采用拉格朗日乘子法,在系统总功率一定的情况下最小化系统的中断概率,实现对各节点功率分配情况的优化。数值分析表明,在相同的车载非对称信道条件和系统总功率的约束下,相对于单向中继HDAF传输方案,该方案下系统的中断概率性能得到明显改善。

关键词(KeyWords)： 智能交通系统;车载自组网;协作通信;功率分配;中断概率;双向中继

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(61472094);国家自然科学基金项目(61261018);; 广西自然科学基金杰出青年基金项目(2014GXNSFGA118007);; 桂林电子科技大学研究生教育创新计划资助项目(2016YJCXB05)~~

作者(Author): 沈正源,邱斌,颜晓娟,金晓晴

DOI: 10.16652/j.issn.1004-373x.2018.15.033

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